ENSEMBL: les marked with .dna.primary.assembly, such as:  ftp://ftp.ensembl.org/
pub/release-77/fasta/homo_sapiens/dna/Homo_sapiens.GRCh38.dna.primary_assembly.
fa.gz  
 NCBI: "no alternative - analysis set": ftp://ftp.ncbi.nlm.nih.gov/genbank/genomes/
Eukaryotes/vertebrates_mammals/Homo_sapiens/GRCh38/seqs_for_alignment_pipelines/
GCA_000001405.15_GRCh38_no_alt_analysis_set.fna.gz

http://www.gencodegenes.org/